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| 共聚聚酰胺 | |||
| 共聚酰胺 | |||
| 共聚多酰胺 | |||
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copolyamide : 14 phrases in 5 subjects |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Polymers | 6 |
| Technology | 1 |
| Textile industry | 4 |
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